Border to Coast Pensions Partnership Ltd MLM — Martin Marietta Materials Inc

Ownership history in Border to Coast Pensions Partnership Ltd  ·  7 quarters on record

AI Ownership Summary

Border to Coast Pensions Partnership Ltd reported Martin Marietta Materials Inc (MLM) in 7 quarterly 13F filings from 2025 Q1 through 2026 Q3. Peak portfolio weight reached 0.88% in 2025 Q3. The latest visible filing shows MLM at 0.40% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings.

What this MLM ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Border to Coast Pensions Partnership Ltd's position in Martin Marietta Materials Inc, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2026 Q3

MLM was reported at 0.40% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.88% in 2025 Q3

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2025 Q1 to 2026 Q3

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

MLM stock page Border to Coast Pensions Partnership Ltd fund profile Border to Coast Pensions Partnership Ltd full holdings
How Border to Coast Pensions Partnership Ltd held MLM — position size vs. price
% of Fund (quarterly)    MLM price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 7 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q3 ADDED — — — 61,230 +5,646 +10.2% 0.40% $29K 2026-10-09 $478.35
2026 Q2 UNCHANGED — — — 55,584 — 0% 0.47% $32K 2026-07-27 $571.10
2026 Q1 REDUCED 31.0% -1.1% ✅ 55,584 -25,003 -31.0% 0.55% $33K 2026-04-22 $608.78
2025 Q4 UNCHANGED — — — 80,587 — 0% 0.88% $50K 2026-01-26 $649.02
2025 Q3 ADDED — — — 80,587 +3,721 +4.8% 0.88% $51K 2025-11-05 $607.19
2025 Q2 ADDED — — — 76,866 +8,455 +12.4% 0.77% $42K 2025-07-14 $560.90
2025 Q1 INITIATED — — — 68,411 — — 0.67% $33K 2025-04-24 $504.99

🏢 Other funds also holding MLM

As of 2026 Q3 — sorted by position size

STEGINSKY CAPITAL LLC 3Y 7Y 10.62% Red Spruce Capital, LLC 3Y 1.15% FENIMORE ASSET MANAGEMENT INC 3Y 7Y 0.94% CONFLUENCE INVESTMENT MANAGEMENT LLC 3Y 7Y 0.39% Douglas Lane & Associates, LLC 3Y 7Y 0.36% Gradient Investments LLC 3Y 7Y 0.3% Hardin Capital Partners, LLC 0.16% Byrne Asset Management LLC 3Y 0.14% SAPIENT CAPITAL LLC 0.13% CONGRESS ASSET MANAGEMENT CO 3Y 7Y 0.11%

FAQ About Border to Coast Pensions Partnership Ltd and MLM

These are the practical questions this page is built to answer before you even open the full history table.

How long has Border to Coast Pensions Partnership Ltd reported owning MLM?

Border to Coast Pensions Partnership Ltd reported MLM across 7 quarterly 13F filings, from 2025 Q1 through 2026 Q3.

What was the largest reported MLM position in Border to Coast Pensions Partnership Ltd's portfolio?

The largest reported portfolio weight for MLM was 0.88% in 2025 Q3.

What is the latest reported MLM position on this page?

The most recent filing on this page is 2026 Q3, when Border to Coast Pensions Partnership Ltd reported 61,230 shares, equal to 0.40% of portfolio, with an estimated market value of $29K.

What does the chart on this MLM ownership page compare?

The chart compares Border to Coast Pensions Partnership Ltd's quarterly MLM portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did Border to Coast Pensions Partnership Ltd time their MLM position?

Based on 13F filing dates vs. subsequent MLM price moves, Border to Coast Pensions Partnership Ltd correctly timed 4 out of 4 reported position changes (100%). The annualised alpha on MLM relative to SPY over the holding period was +929.0%.

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